Discharge
The intake and discharge spouts on the Munson Glass Batcher are equipped with radial seals to prevent leakage. The hinged discharge gate is enclosed in the discharge housing. The spout projects into the batcher, but the opening through which the blended material discharges is closed off by the hinged gate during the charging and mixing cycle. At the completion of the mixing cycle, the gate is opened to allow the discharge of blended materials. The gate operates in a vertical plane, and the closing and opening action is provided by means of heavy-duty linkage and air cylinder that is mounted externally on the discharge spout. The air cylinder is controlled by a 4-way manually operated valve (standard equipment) or can be controlled from the master console or programming arrangement incorporated in the batch system by specifying the optional solenoid-controlled valve. In some installations, the gate is manually operated through a pushbutton or levered valve and in others is automatically operated through program tenders.

Radial Seals
Seals are the most critical aspect of any industrial batcher, and the Munson Glass Batcher has unique external drum seals of a radial design which bear laterally, under constant uniform spring pressure, against ground and polished segmented (4-piece) wear rings. The seals themselves are stationary but float laterally against the rings. Contact between seal unit and wear ring is maintained by equally spaced compression springs. An adjustment feature is provided to increase the compression to compensate for normal wear on seal element. The element is of a split one-piece design and, when installed, the element is endless because the mating ends are held in place by a compression band. Replacement can be made with simple hand tools without disturbing any major components.

Vents
Since most glass batcher installations are incorporated in closed systems, a vent pipe is provided in the discharge spout housing so that dust caused by the flow of blended materials into receiving hoppers can be safely vented or returned into the system ahead of the mixer intake. A similar vent arrangement is provided in the intake spout to relieve air that is displaced within the mixer drum during the charging cycle. Both these vents contribute to a dust-tight and dust-free operation, and increase the life of the drum seals. Abrasive dust particles escape through the vents, rather than being forced past the seals.

Quiet, Economical Performance
The prime drive utilizes V-belts from the motor to a countershaft-mounted gear reducer with oil-submerged reduction gears. Secondary drive consists of a heavy-duty roller chain running from a hardened pinion on the countershaft to the drum sprocket. The unusually quiet operation of the Munson Glass Batcher is due entirely to design, precision machining and construction. This, in turn, added to the natural characteristics of a rotary batcher, assures maximum service with quality performance plus economical operation.